Search for: [Subject and Keywords = algebra Boole'a] OR [Subject and Keywords = rachunek prawdopodobieństwa] OR [Subject and Keywords = zbiory przybliżone] OR [Subject and Keywords = teoria zbiorów przybliżonych] OR [Subject and Keywords = logika matematyczna] OR [Subject and Keywords = wiedza] OR [Subject and Keywords = KDD] OR [Subject and Keywords = logika Boole'a] OR [Title = A rough set perspective on data and knowledge] OR [Creator = Pawlak, Zdzisław] OR [Creator = Skowron, Andrzej] OR [Creator = Polkowski, Lech T.] OR [Creator = Komorowski, Henryk Jan]